Robot Vacuums · Head to head

Dreame L40s Ultra AE vs Roborock Qrevo Curv 2 Flow

Full Robot Vacuums comparison in 2026

Updated September 2026
Data from Amazon and official Dreame and Roborock sites.
2026 verdict
In 2026, the recommendation leans toward Dreame L40s Ultra AE over Roborock Qrevo Curv 2 Flow, driven by price, warranty, and water tank capacity.
Dreame L40s Ultra AE
Winner
Dreame L40s Ultra AE
$669.99$729.998% OFF
Buy on Amazon USACheck price
It has the clearer edge on price, warranty, and water tank capacity, and it stays ahead on onboard dustbin capacity and dock dustbin capacity. Roborock Qrevo Curv 2 Flow remains a niche alternative if battery life, integrations, and suction power matter more than the rest of the comparison. That keeps the verdict firmly in favor of Dreame L40s Ultra AE.
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FeatureDreame L40s Ultra AERoborock Qrevo Curv 2 FlowWinner
Price$669.99$799.99Dreame L40s Ultra AE
Warranty3 years1 yearDreame L40s Ultra AE
Battery Life180 minutes242 minutesRoborock Qrevo Curv 2 Flow
IntegrationsGoogle Home, Alexa, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterRoborock Qrevo Curv 2 Flow
Suction Power19000Pa20000PaRoborock Qrevo Curv 2 Flow
Water Tank Capacity4.5L4LDreame L40s Ultra AE
Onboard Dustbin Capacity395ml325mlDreame L40s Ultra AE
Dock Dustbin Capacity3.2L2.7LDreame L40s Ultra AE
Rating4.34.3Tie
Auto RechargeYESYESTie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Winner
Dreame

Dreame L40s Ultra AE

8% OFF
$669.99
$729.99
Buy on Amazon USACheck price
  • + Price: $669.99
  • + Warranty: 3 years
  • + Water Tank Capacity: 4.5L
  • - Battery Life: 180 minutes vs 242 minutes
  • - Integrations: Google Home, Alexa, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

Frequently Asked Questions

Which is better overall: Dreame L40s Ultra AE or Roborock Qrevo Curv 2 Flow?

Dreame L40s Ultra AE has the stronger overall profile in this comparison, especially for price, warranty, and water tank capacity.

What is the biggest difference between Dreame L40s Ultra AE and Roborock Qrevo Curv 2 Flow?

Price is one of the clearest differences: Dreame L40s Ultra AE lists $669.99, while Roborock Qrevo Curv 2 Flow lists $799.99.

Which one looks better on price?

Dreame L40s Ultra AE is listed at $669.99, while Roborock Qrevo Curv 2 Flow is listed at $799.99. Dreame L40s Ultra AE (better spec).

Who should buy Dreame L40s Ultra AE?

Choose Dreame L40s Ultra AE if your priority is price and warranty and that matters more than battery life.

Who should buy Roborock Qrevo Curv 2 Flow?

Choose Roborock Qrevo Curv 2 Flow if your priority is battery life and integrations and that matters more than price.

Full comparison table

Compare all 151 Robot Vacuums side by side

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